Is CVE-2026-51218 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-51218?

CVE-2026-51218 has a CVSS v3 severity of MEDIUM (6.5).

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CVE-2026-51218

Description

A heap buffer overflow in the TS7Worker::PerformFunctionWrite() function (/core/s7_server.cpp) of snap7 v1.4.3 allows attackers to cause a Denial of Service (DoS) via a crafted packet.